Chip removing method and apparatus



Feb. 17, 1953 zlNTY CHIP REMOVING METHOD AND APPARATUS Filed July 17, 1951 A TTOR/VE Y 6 W R m2 mm m w I w 7 N j w M 3 4 V by 30323: y z I W @atent-ed Feb. 1?, i353 CHIP EtEMOViNG METHOD AND APPARATUS Marcel .I. Zinty, New York, N. Y., assignor to Magnus Chemical Company, Inc., Garwood, N. J., a corporation of New York Application July 17, 1951, Serial No. 237,133

1 Claim.

factory only in proportion to the degree of care exercised.

The object of the present invention is to provide an automatic method and suitable apparatus utilizing a form of washing operation which has been found to be particularly effective for the purpose.

In line with known methods of washing and degreasing, the invention contemplates the enclosure of the machine parts in a foraminous container or basket and manipulation of the basket in a suitable bath. For mere washing purposes, satisfactory results have been achieved by reciprocating the basket of parts vertically in the bath, but such manipulation of the basket is not satisfactory for removing chips and similar foreign matter from the parts. It has been discovered, however, that such material can be removed effectively by imparting to the basket a compound motion consisting of a slow rotation about a horizontal axis and, coincidently or simultaneously, a relatively long stroke vertical reciprocation, also at a slow rate. By this method, it has been found, insoluble foreign matter is removed even from machine parts having hollows or interstices in which the foreign particles have a tendency to accumulate and from which their removal has heretofore presented difficulties.

The invention is more or less diagrammatically illustrated in the accompanying drawings, of which:

Fig. 1 is a vertical section of a tank incorporating one form of the invention;

Fig. 2 is a similar View illustrating another form of the invention; and

Fig. 3 is a section on the line III-III of Fig. 2.

In the Fig. 1 form of the invention, a tank 1 is shown and within it a basket 2 for the articles to be cleaned. The basket is supported on a frame 3 provided with reciprocatory drive means whereby the frame and basket are raised and lowered in the washing medium in the tank. The reciprocatory drive means is shown as consisting of rods 4, 5 suspended from crank arms 5, 7. The frame can be assumed to be of rectangular form and supported at its other two corners by corresponding rods and crank arms. The crank shafts 8, 9 may be oscillated by a suitable motor (not shown). It has been found that the best results are achieved by reciprocating the frame and basket through a fairly long stroke of the order of, say, six or seven inches and, in any event, of more than two inches.

Provision is made for rotating the basket simultaneously with its reciprocation and to that end the basket is provided with aligned trunnions W, H at its opposite ends, the trunnions being supported in half-bearings l2, l3 so that the basket is readily removable from the tank. The basket is indicated as being driven by a motor id through sprockets and chain I5, the motor being mounted on an elevated platform 16 on a frame support ll. The motor drive for the basket includes a speed-reducer [8 to ensure slow rotation of the basket, it having been found that the pieces are not effectively cleaned if the basket is rotated rapidly. The basket speed should not exceed thirty revolutions per minute.

In the form shown in Figs. 2 and 3, the tank, frame and reciprocatory drive for the frame may be as already described and corresponding parts are correspondingly marked with primed reference characters.

In this instance, the drive motor for the basket is dispensed with, the basket being rotated coincidently with and by the reciprocation of the frame. To that end, basket trunnion I9 is shown extended and carrying at its free end a star wheel 28; and mounted on the adjacent tank wall is a pivoted finger 2! (Fig. 3) abutting a fixed stop 22. As will be understood, the finger engages the star wheel to advance the basket on each upward movement of the frame. On the downward movement of the frame the finger yields.

The foregoing are but two of the numerous mechanical forms in which the invention can be incorporated and will be understood to be illustrative only.

4 1 11 the light 0f the above, the following iS REFERENCES CITED damned: The following references are of record in the A washing apparatus for removing chips and file at this patent. the like from machine parts comprising the combination of a, tank; a, frame suspended in 5 UNIIED STATES PAIENIS the tank; a basket supported on the frame for Number Name Date rotation about a horizontal axis; reciprocatory 1,994,109 Perry Mar. 12, 1935 drive means having connections for raising and 2,099,121 Kivley Nov. 16, 1937 lowering the frame and basket through a stroke 2,107,890 Frank Feb. 8, 1938 in excess of two inches; and motor drive means 10 2,442,675 Boss June 1, 1948 coupled to the basket and arranged to rotate 2,571,581 Kearney Oct. 16, 1951 the same at a speed not in excess of thirty revolutions per minute.

MARCEL J. ZINTY. 

